Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
  • F02M35/10—Air intakes; Induction systems
  • F02M35/104—Intake manifolds
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
  • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
  • F02B29/04—Cooling of air intake supply
  • F02B29/0406—Layout of the intake air cooling or coolant circuit
  • F02B29/0418—Layout of the intake air cooling or coolant circuit the intake air cooler having a bypass or multiple flow paths within the heat exchanger to vary the effective heat transfer surface
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
  • F02M26/02—EGR systems specially adapted for supercharged engines
  • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
  • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
  • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
  • F02M26/19—Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake system
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
  • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
  • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
  • F02M26/20—Feeding recirculated exhaust gases directly into the combustion chambers or into the intake runners
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
  • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
  • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
  • F02M35/10—Air intakes; Induction systems
  • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
  • F02M35/10—Air intakes; Induction systems
  • F02M35/1015—Air intakes; Induction systems characterised by the engine type
  • F02M35/10157—Supercharged engines
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
  • F02M35/10—Air intakes; Induction systems
  • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
  • F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
  • F02M35/10—Air intakes; Induction systems
  • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
  • F02M35/10268—Heating, cooling or thermal insulating means
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
  • F02M35/10—Air intakes; Induction systems
  • F02M35/104—Intake manifolds
  • F02M35/1045—Intake manifolds characterised by the charge distribution between the cylinders/combustion chambers or its homogenisation
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T10/00—Road transport of goods or passengers
  • Y02T10/10—Internal combustion engine [ICE] based vehicles
  • Y02T10/12—Improving ICE efficiencies

Definitions

• the invention relates to a dispensing module for dispensing an intake mixture to at least two cylinders of a heat engine.
• Patent application FR 2 946 697 discloses a device for mixing a flow of gas in the cylinder head of a motor vehicle engine.
• This device comprises a heat exchanger comprising a heat exchange beam arranged to exchange heat with intake gases comprising air flowing in the heat exchange beam.
• the inlet gases are introduced into the heat exchanger by an inlet manifold, mounted upstream of the heat exchanger, and discharged through a distribution manifold, mounted downstream of the heat exchanger and intended for be connected to the engine cylinder head.
• the mixing device comprises a gas guiding casing, having a polygonal section transversely to the direction of flow of the gases in the guide casing, arranged to guide the upstream gas downstream in the mixing device.
• the distribution manifold is mounted on the cylinder head of the engine. The distribution manifold allows a distributed admission into the cylinder head of the cooled gas stream from the heat exchanger.
• the mixing device further comprises means for injecting a flow of recirculated exhaust gas from the engine, known to those skilled in the art under its abbreviation EGR corresponding to Exhaust Gas recirculation.
• the injection means comprise a plurality of diffusion orifices opening on the guide casing, said diffusion orifices extending substantially in the same plane and being arranged to inject the recirculated exhaust stream perpendicularly to the main direction. flow of gas in the guide housing.
• a disadvantage of such a device is that it is not suitable for use with other types of gas mixture.
• the present invention aims in particular to remedy this drawback.
• the invention thus relates to a distribution module for distributing an intake mixture to at least two cylinders of a heat engine, this intake mixture selectively comprising:
• the module comprising:
• the module being arranged to distribute the admixture admixture substantially equally between these at least two cylinders,
• the module comprising a mixing chamber into which the first, second and third arrivals open and in which the intake mixture is made,
• the second inlet being connected to a first distribution member arranged to distribute the uncooled intake air in the mixing chamber, the third inlet being connected to a second distribution member arranged to distribute the recirculation gas in the chamber of mixed,
• At least one of the first and second distribution members has a tubular shape.
• the invention it is possible to distribute other types of mixtures, including the combination comprising uncooled intake air and recirculation gas.
• the invention is particularly well suited in an air intake circuit comprising a bypass bypass channel of the cooled track.
• the module may include a mixing chamber into which the first, second and third arrivals and in which the intake mixture is made. Such a mixture can be made before entering the cylinders of the engine.
• the mixing chamber may comprise a single compartment opening on all the cylinders. Such a compartment allows a uniform mixture of elements likely to arrive by the first, second and third arrivals.
• the mixing chamber may comprise a plurality of compartments, at least one of the compartments opening on only one of the cylinders of the engine. This makes it possible to distribute the mixture according to a law of predetermined distribution and reliably distribute the mixture between the cylinders of the engine.
• the mixing chamber may comprise a plurality of compartments each opening on only one of the cylinders of the engine. This particular arrangement offers the advantage of allowing a better distribution between all the cylinders of the heat engine. Indeed, the mixing is carried out in a given compartment and is then distributed from this compartment to the cylinder of the engine in which the compartment opens.
• the dispensing module may be arranged such that the cooled intake air and the uncooled intake air flow into the mixing chamber in converging directions. Thus, the cooled intake air and the uncooled intake air are better mixed as they pass through the mixing chamber.
• the dispensing module can be arranged so that the cooled intake air and the recirculation gas flow into the mixing chamber in convergent directions. Thus, the cooled intake air and the recirculation gas are best mixed as they pass through the mixing chamber.
• the dispensing module can be arranged so that the uncooled intake air and the recirculation gas flow into the mixing chamber in the same direction. This arrangement allows for particularly efficient mixing when cooled intake air flows into the mixing chamber.
• the dispensing module can be arranged in such a way that the uncooled intake air and the recirculation gas flow into the mixing chamber in convergent directions. This arrangement allows good mixing of the cooled intake air with the recirculating gas. This arrangement allows for particularly efficient mixing when there is no cooled intake air flowing into the mixing chamber.
• the dispensing module may be arranged such that the uncooled intake air and the recirculating gas flow into the mixing chamber in substantially opposite directions.
• the dispensing module may be arranged such that the uncooled intake air and the recirculating gas flow into the mixing chamber in substantially the same direction.
• the second inlet can be connected to a first distribution member arranged to distribute the uncooled intake air in the mixing chamber.
• the third inlet can be connected to a second distribution member arranged to distribute the recirculation gas in the mixing chamber.
• the uncooled intake air and the recirculation gas can pass through two distribution members separate from each other to enter the mixing chamber.
• At least one of the first and second distribution members may comprise a plurality of orifices for distribution.
• the plurality of orifices allows the creation of injection points within the mixing chamber. This makes it possible to increase the efficiency of the mixture and thus improve the distribution of the element circulating in the distribution member under consideration, in the mixing chamber.
• At least one of the first and second distribution members may comprise a channel common to all the orifices. Such a distribution member ensures a good distribution, while being simple in design.
• At least one of the first and second distribution members comprising a plurality of channels each associated with an orifice.
• the mixing chamber may comprise a plurality of compartments and each orifice may open on one of the compartments of the mixing chamber. This arrangement makes it possible to improve the distribution of the mixture in the mixing chamber, each compartment containing part of the mixture.
• the term "compartment” means a portion of the mixing chamber isolated from the rest of the mixing chamber. In other words, the mixture can not flow from one compartment to another.
• At least one of the first and second distribution members may comprise as many channels as cylinders of the engine, this number being for example equal to four.
• each channel can be dedicated to the distribution of intake air and / or recirculation gas, in a particular cylinder.
• At least one of the channels can form at least one elbow.
• the orifices of at least one of the first and second distribution members may be arranged substantially equidistant from each other. This arrangement increases the effectiveness of the mixture.
• the orifices of at least one of the first and second distribution members may be arranged at a distance that is variable from one another.
• the orifices of at least one of the first and second distribution members may be substantially aligned along a line segment.
• the orifices of at least one of the first and second distribution members may be arranged on either side of a side of a line segment.
• At least one of the first and second distribution members may comprise as many ports or cylinders of the engine, this number being for example between two and six, for example equal to four.
• At least one of the first and second distribution members may comprise more orifices than cylinders.
• At least one of the first and second distribution members may have fewer orifices than cylinders.
• the first distribution member may have a cross section and at least one of its orifices may be smaller or the same size as the cross section of the first member.
• the second distribution member may have a cross section and at least one of its orifices may be smaller or the same size as the cross section of the second member.
• the orifices of said distribution member may have a surface different from, for example less than, the surface of another of its orifices.
• the orifices of said distribution member may have an increasing surface as distance from its respective inlet.
• At least one of the first and second distribution members may have a tubular shape.
• the cross section of this tubular shape can be constant along this tubular shape.
• the cross section of this tubular shape can be variable along this tubular shape. This particular shape can make it possible to better distribute the flow of gases over the entire length of the mixing chamber to achieve a venturi effect.
• the first and second distribution members may have a cross section of different area.
• first and second distribution members may have a cross section of substantially equal area.
• the tubular shape may have a circular cross section.
• At least one of the first and second distribution members may be closed at its opposite end upon arrival.
• the fluid flowing in the circulation member can lead only through its orifices.
• At least one of the first and second distribution members may extend over substantially the entire length of the mixing chamber. This arrangement offers the advantage of allowing a good distribution of the fluid flowing in it over the entire length of the mixing chamber.
• At least one of the first and second distribution members may extend over only a portion of the length of the mixing chamber, for example less than half that length.
• the first arrival may have a longitudinal shape, for example rectangular, and at least one of the first and second distribution members may extend in the longitudinal direction of this first arrival.
• At least one of the first and second distribution members may be arranged offset from the first inlet, so as to leave the flow of cooled intake air free.
• the dispensing module can be arranged in such a way that the cooled intake air leaves the first inlet homogeneously over the entire surface of this first inlet.
• At least one of the first and second distribution members may be in the form of a one-piece foundry further comprising the mixing chamber.
• At least one of the first and second distribution members may be made in the form of separate foundries assembled on the mixing chamber.
• At least one of the first and second distribution members may be formed or in the form of extruded tube with pierced holes, the tube being inserted into the mixing chamber.
• the first and second distribution members may be located externally from each other. Alternatively, one of the first and second distribution members may be located inside the other, at least partially.
• the first and second distribution members may be located at a non-zero distance from each other.
• first and second distribution members may be contiguous.
• the first and second distribution members may be contiguous along a flat contact surface.
• the first and second distribution members may be located on either side of the first arrival.
• the first and second distribution members may be located on the same side of the first arrival.
• the first and second distribution members may be substantially parallel.
• the first distribution member may have at least a portion of its orifices vis-à-vis at least a portion of the orifices of the second distribution member.
• the second and third finishes can be arranged on the same side as the first finish.
• the second arrival and the third arrival can be arranged on either side of the first arrival.
• the second inlet and / or the first distribution member may be arranged so that the uncooled intake air flows into the mixing chamber with a first maximum flow, the third inlet and / or the second distribution member can being arranged so that the recirculation gas flows into the mixing chamber with a second maximum flow rate, the first and second maximum flow rates being different.
• the second inlet and / or the first distribution member may be arranged so that the uncooled intake air flows into the mixing chamber with a first maximum flow
• the third inlet and / or the second distribution member can be arranged so that the recirculating gas flows into the mixing chamber with a second maximum flow rate, the first and second maximum flow rates being equal.
• the dispensing module can be arranged to allow the intake mixture to be mixed with uncooled intake air and recirculation gas, without cooled intake air.
• the recirculation gas of the intake mixture may selectively comprise uncooled recirculation gas, or cooled recirculation gas, or a combination of both.
• the third inlet for bringing the uncooled recirculation gas into the module and the module may further comprise a fourth inlet for bringing the cooled recirculation gas into the module.
• the invention furthermore relates to an intake circuit for a turbocharged engine, comprising:
• a bypass valve arranged to selectively send the cooled intake air or the uncooled intake air to the distribution module.
• the intake circuit may further comprise:
• a cooled path having a heat exchanger for bringing the cooled intake air into the module
• an uncooled lane to bypass said heat exchanger, an EGR loop for bringing the recirculation gas into the module, the bypass valve allowing the selection of either the cooled lane or the uncooled lane.
• the bypass valve may furthermore make it possible to dose the quantity of intake air entering the distribution module.
• the EGR loop may be a high pressure EGR loop disposed between the upstream portion of the turbine of the turbocharged engine and the distribution module.
• the metering valve can be arranged in the EGR loop.
• the invention further relates to a method for distributing an intake mixture to at least two cylinders of a heat engine,
• This intake mixture selectively comprising:
• the intake mixture is distributed substantially equally between these at least two cylinders.
• FIGS. 1 and 2 show, schematically and partially, an intake circuit according to the invention, mounted on a turbocharged engine, according to two modes of operation,
• FIG. 3 is a schematic partial view, in perspective, of the distribution module of the circuit of FIGS. 1 and 2,
• FIGS. 4 to 6 are diagrammatic and partial views, in perspective, of a distribution module according to other exemplary embodiments of the invention.
• FIG. 7 is a diagrammatic and partial view, in section along VII-VII, of the two distribution members of the dispensing module of FIG. 6, and
• FIG. 8 is a schematic and partial view, in perspective, of a distribution module according to another embodiment of the invention.
• FIGS. 1 and 2 show:
• a turbocharged engine 1 of a motor vehicle this engine 1 comprising four cylinders 2,
• the intake circuit 10 comprises: a distribution module 11,
• bypass valve 12 arranged to selectively send cooled intake air or uncooled intake air to the distribution module 11,
• a cooled lane 13 comprising a heat exchanger 14 for cooling the intake air coming from the bypass valve 12, a non-cooled lane 15 to bypass this heat exchanger 14,
• an EGR loop 16 comprising a metering valve 17 for supplying recirculation gas into the distribution module 11.
• the bypass valve 12 allows the selection of either the cooled channel 13 or the uncooled channel 15 to bring the intake air to the distribution module 11.
• the intake air is compressed by the compressor 5.
• the EGR loop 16 is a high pressure EGR loop disposed between the upstream portion of the turbine 4 of the turbocharged engine 1 and the distribution module 11.
• the intake circuit 10 can operate in different modes, depending on the state of the valves 12 and 17.
• the bypass valve 12 makes it possible to select the cooled path 13 and the metering valve 17 allows the recirculation gas to enter the distribution module 11.
• the air cooled intake and recirculation gas are mixed in the distribution module 11.
• This operating mode is for example used when the engine is already hot and when it is not used at full load. In this case, cold air is supplied to the inlet so as not to further increase the engine temperature, and recirculation gas is supplied to the intake to limit the volume of air at the intake. level of each cylinder.
• the bypass valve 12 allows the uncooled channel 15 to be selected and the metering valve 17 allows the recirculation gas 16 to enter the distribution module 11.
• uncooled intake air and the recirculation gas are mixed in the distribution module 11.
• This operating mode is for example used when the engine is cold and when it is not used at full load. This is the case, for example when starting the vehicle.
• the bypass valve 12 allows the selection of the cooled path 13 and the metering valve 17 prevents the recirculation gas from entering the distribution module 11.
• This mode of operation is for example used when the engine is hot and when it is used at full load. This is for example the case when the turbo is at its maximum compression ratio.
• bypass valve 12 allows the selection of the uncooled channel 15 and the metering valve 17 prevents the recirculation gas 16 from entering the distribution module 11.
• This operating mode is for example used when the engine is cold and when it is used at full load. This is for example the case when starting the vehicle, the vehicle being uphill and loaded.
• bypass valve 12 allows the selection of both the uncooled path 15 and the cooled path 13 and the metering valve 17 allows the recirculation gas 16 to enter the distribution module 11.
• bypass valve 12 allows the selection of both the uncooled path 15 and the cooled path 13 and the metering valve 17 prevents the recirculation gas 16 from entering the distribution module 11.
• the distribution module 11 will now be described in more detail with reference to FIG.
• the dispensing module 11 makes it possible to dispense an intake mixture to the rolls 2.
• This admission mixture selectively comprises:
• the module 11 comprises:
• a first inlet 21 making it possible to bring the cooled intake air into the module 11, this cooled intake air coming from the cooled track 13 and having previously passed through the heat exchanger 14, in the configuration where the valve by-pass 12 is configured to bring the intake air leaving the compressor 5 to the cooled track a second inlet 22 making it possible to bring the uncooled intake air into the module 11, in the configuration where the bypass valve 12 is configured to bring the intake air leaving the compressor 5 to the non cooled 15,
• a third inlet 23 making it possible to bring the recirculation gas into the module 11, in the configuration where the metering valve 17 is configured to bring the recirculation gas to the third inlet 23,
• the module 11 being arranged to distribute the intake mixture substantially equally between the cylinders 2.
• the dispensing module 11 comprises a mixing chamber 24 into which the first 21, second 22 and third 23 arrived and in which the intake mixture is made.
• the mixing chamber 11 has a single compartment opening on all the cylinders 2.
• the distribution module 11 is arranged in such a way that:
• the uncooled intake air and the recirculation gas flow into the mixing chamber in substantially opposite directions.
• the second inlet 22 is connected to a first distribution member 25 arranged to distribute the uncooled intake air in the mixing chamber 24.
• the third inlet 23 is connected to a second distribution member 26 arranged to distribute the recirculation gas in the mixing chamber 24.
• the first and second distribution members 25 and 26 each comprise four orifices 27, 28 for the distribution respectively of the uncooled intake air and of the recirculation gas, in the mixing chamber 24.
• the first and second distribution members 25 and 26 each comprise a channel 32 common to the four orifices 27, 28.
• the four orifices 27, 28 of each of the first and second distribution members 25 and 26 are arranged substantially equidistant from each other.
• the first distribution member 25 has a cross section and the four orifices 27 are smaller than the cross section of the first member 25.
• the four orifices 27 have the same surface.
• the second distribution member 26 has a cross section and the four orifices 28 are smaller or smaller than the cross section of the second member 26.
• the four orifices 28 have the same surface.
• the first and second distribution members 25 and 26 have a tubular shape, of circular and constant cross section along this tubular shape.
• the first distribution member 25 has a cross section whose area is greater than the cross sectional area of the second distribution member 26.
• the first distribution member 25 is closed at the end opposite its arrival 22.
• the second distribution member 26 is closed at the end opposite its arrival 23.
• the first and second distribution members 25 and 26 each extend over substantially the entire length of the mixing chamber 24.
• the first inlet 21 has a rectangular shape, and the first and second distribution members 25 and 26 each extend in the longitudinal direction of this first inlet 21.
• the first and second distribution members 25 and 26, externally of each other, are disposed on either side of the first inlet 21, substantially parallel to each other, offset from the the first arrival 21.
• the distribution module 11 is arranged in such a way that the cooled intake air leaves the first inlet 21 in a homogeneous manner over the entire surface of this first inlet 21.
• the cooled intake air circulates in the mixing chamber , according to the direction shown by the arrow 31.
• the first and second distribution members 25 and 26 are made or in the form of extruded tubes with pierced holes, the tubes being threaded into the mixing chamber.
• Each orifice 27 of the first distribution member 25 is vis-à-vis an orifice 28 of the second distribution member 26.
• the second arrival 22 and the third arrival 23 are disposed on either side of the first arrival 21.
• 25 and 26 are not arranged on either side of the first arrival 21, but are arranged on the same side of this arrival 21, being contiguous to one another.
• These two distribution members 25 and 26 extend along the wall 29 of the mixing chamber 24.
• the uncooled intake air and the recirculating gas flow into the mixing chamber 24, substantially in the same direction.
• distribution members 55 and 56 which are contiguous along a plane contact surface 57.
• the second arrival 22 and the third arrival 23 are arranged on the same side with respect to the first arrival 21.
• the orifices 27 of the first distribution member 55 have different surfaces. More precisely, their surface is increasing as they move away from the entrance 22.
• the orifices 28 of the second distribution member 56 have different surfaces. More precisely, their surface is increasing as they move away from the entrance 23.
• first and second distribution members 55 and 56 have a cross section of substantially equal area.
• the cross section of the distribution member 65 is variable along said distribution member 65.
• each orifice 27 of the first distribution member 65 is opposite an orifice 28 of the second distribution member 66.
• the orifice 27 here has a surface greater than that of the orifice 28.
• FIG. 8 shows a distribution module 81 comprising a mixing chamber 84 into which the first, second, second and second 23, and the inlet mixture are discharged.
• the mixing chamber 81 has four compartments 88, each compartment opening on only one of the cylinders 2 of the engine.
• the compartments 88 are substantially isolated from each other.
• the dispensing module 81 comprises a first distribution member 95.
• This first distribution member 95 comprises four channels 85 independent of each other. Each channel 85 is associated with an orifice 87, each orifice 87 opening on only one of the compartments 88 of the mixing chamber 24.
• Each channel 85 forms a bend at right angles.
• the dispensing module 81 further comprises a second distribution member 26.
• this second distribution member 26 has a common channel and further comprises four openings 28, the orifices 28 opening each into a single compartment 88 of the mixing chamber 24.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Exhaust-Gas Circulating Devices (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=49212890

Family Applications (1)

Country Status (4)

Families Citing this family (3)

Family Cites Families (23)

• 2013
  • 2013-06-25 FR FR1356075A patent/FR3007470B1/fr not_active Expired - Fee Related
• 2014
  • 2014-06-13 US US14/899,321 patent/US9920721B2/en active Active
  • 2014-06-13 WO PCT/FR2014/051466 patent/WO2014207342A1/fr active Application Filing
  • 2014-06-13 EP EP14735628.1A patent/EP3017180A1/de not_active Withdrawn

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